Speed of light (c)

Definition

The speed of light is the fastest possible speed at which energy or information can travel in a vacuum. It is approximately 299,792,458 meters per second.

Related terms

Frequency:

The number of complete cycles or oscillations of a wave that occur in one second.

Electromagnetic Spectrum:

The range of all possible frequencies and wavelengths of electromagnetic radiation.

Refraction:

The bending or change in direction of light as it passes from one medium to another.